/**
 * Retry configuration and utilities for Modbus transport operations
 */
/** Maximum number of retry attempts for failed operations */
export declare const MAX_RETRIES = 3;
/** Delay between retry attempts in milliseconds */
export declare const RETRY_DELAY_MS = 100;
/**
 * Logger function to track retry attempts
 *
 * @param attempt - The attempt number (1-indexed)
 * @param error - The error that caused the retry
 */
export type RetryLogger = (attempt: number, error: Error) => void;
/**
 * Retry a function with fixed delay between attempts
 *
 * @param fn - The async function to retry
 * @param maxRetries - Maximum number of attempts (default: MAX_RETRIES)
 * @param logger - Optional callback to log retry attempts
 * @returns Promise resolving to the function's return value
 * @throws The last error encountered if all retries are exhausted
 */
export declare function withRetry<T>(fn: () => Promise<T>, maxRetries?: number, logger?: RetryLogger): Promise<T>;
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